30968786 has 4 divisors (see below), whose sum is σ = 46453182. Its totient is φ = 15484392.

The previous prime is 30968771. The next prime is 30968797. The reversal of 30968786 is 68786903.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 28143025 + 2825761 = 5305^2 + 1681^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 30968786.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7742195 + ... + 7742198.

Almost surely, 2^30968786 is an apocalyptic number.

30968786 is a deficient number, since it is larger than the sum of its proper divisors (15484396).

30968786 is a wasteful number, since it uses less digits than its factorization.

30968786 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15484395.

The product of its (nonzero) digits is 435456, while the sum is 47.

The square root of 30968786 is about 5564.9605569132. The cubic root of 30968786 is about 314.0325942878.

The spelling of 30968786 in words is "thirty million, nine hundred sixty-eight thousand, seven hundred eighty-six".